Pad Mounted Transformer
Yawei's 750kV, 500kV, 400kV, 330kV, 220kV, and 110kV ultra-high voltage transformers, as well as various dry-type transformers, oil-immersed transformers, and amorphous alloy transformers of 35kV and below, are meticulously designed, engineered, and rigorously tested, fully complying with the highest international industry standards, including IECC, TUV, UL, CE, KEMA, and GOST certifications.
The delivery time for main transformers is only 60 days, distribution transformers 20 days, dry-type transformers 15 days, and U-type transformers 30 days. This exceptional delivery speed helps customers seize market opportunities.
Product Scope
15 kVA - 10,000 kVA base
Up to 35kv
the vedio of the product
More specific products
YAwei is a professional manufacturer of transformers. It can produce Single phase transformer. Three-phase transformer, Pad mounted transformers, Dry transformer, Distribution transformer and High voltage transformer of 69KV and above. It can meet IEEE/ANSI/DOE/CSA and IEC standards. Moreover, we have over 30 years of export transformer manufacturing experience. YAWEI transformers have at least two-year warranty. OEM and ODM accepted.
Yawei Group has more than 180 engineers and technical personnel. More than 1000 employees, covering an area of 240,000 square meters. we have 6 branch Branch factories. Cover complete production line of transformer from winding wire silicon sheet slitting and rolling, transformer oil tank producing and power transformer manufacturing. Better control of quality and cost for complete production line.
Why choose us?
High quality
Our group company is distinguished by its comprehensive product line, great quality control that permeates every stage of our operations-from the selection of raw materials to the meticulous production process and the reliable delivery of our products.
Professional team
With a dedicated team of over 150 engineers and technical professionals supported by a workforce of more than 1800 employees, we cover every aspect from design to production to delivery. Our diverse teams are committed to offering you impeccable customization tailored to your unique needs.
Accept ODM/OEM Service
Our state-of-the-art domestic automotive stacking equipment, lightning shock apparatus, and epoxy vacuum pouring machines are designed to handle large-scale orders with unwavering commitment to quality and precision.
Custom service
Our seasoned after-sales team, backed by a sophisticated support process, stands ready to address your urgent needs around the clock, ensuring that you receive prompt and professional assistance whenever it's required.
A padmount or pad-mounted transformer is a ground-mounted electric power distribution transformer in a locked steel cabinet mounted on a concrete pad. Since all energized connection points are securely enclosed in a grounded metal housing, a padmount transformer can be installed in places that do not have room for a fenced enclosure. Padmount transformers are used with underground electric power distribution lines at service drops to step down the primary voltage on the line to the lower secondary voltage supplied to utility customers. A single transformer may serve one large building or many homes.
Benefits of Pad Mounted Transformer
Safety considerations
Pad-mounted transformers are designed with safety in mind. Their enclosed structure helps to prevent accidental contact with live electrical components, reducing the risk of electric shock.
Additionally, these transformers often come with built-in fault protection that can quickly isolate any issues, reducing hazards and ensuring the safety of both the public and maintenance personnel.
Visual impact
Pad-mounted transformers have a low-profile, compact design that allows them to integrate seamlessly into different settings.
Manufacturers can customize their exterior appearance to match local aesthetics, whether in cityscapes or more natural environments, helping to minimize visual disruption and maintain the overall appeal of the area.
Durability and reliability
Pad-mounted transformers are built to withstand harsh conditions, contributing to their durability and long lifespan. They are resistant to extreme weather, vandalism, and animal interference, ensuring a consistent and reliable power supply.
Simplified installation and maintenance
These transformers are installed at ground level, making installation straightforward. This approach requires only a concrete pad and electrical connections. The ground-level installation also simplifies regular maintenance and inspections, reducing operational costs and downtime.
Enhanced security
Pad-mounted transformers come with lockable enclosures, providing an additional layer of security against unauthorized access and tampering. This feature is particularly important in areas where vandalism is a concern or where public safety is a priority.
Environmental freiendly
Environmental compatibility: These transformers are designed with eco-friendliness in mind, using less hazardous materials and adhering to environmental standards. This helps reduce their overall environmental footprint.
Types of Pad Mounted Transformer
Residential pad-mounted transformers
Residential pad-mounted transformers are ground-mounted transformers that are meant to supply electricity to many homes. Furthermore, they are distribution transformers locked inside a steel cabinet installed on a concrete slab.
Single-phase pad-mounted transformers
Pad-mounted single-phase transformers are unique. Residential pad-mounted transformers with ratings ranging from 10 to 220 kVA and designed to be compatible with a variety of applications, meaning that even though they are single-phase pad-mounted transformers, they fulfil A.N.S.I and N.E.M.A regulations.
Three-phase pad-mounted transformers
When it comes to three-phase pad-mounted transformers, they’re still small power centres that are frequently employed in industrial, commercial, and utility applications. They are also built to be resilient in order to withstand severe settings because they are exposed to the elements. Inside and outside structures, three-phase pad-mounted transformers are used for energy efficiency and safety concerns.
The working mechanism of a pad-mounted transformer involves the transformation of voltage levels through electromagnetic induction. Inside the transformer, there are primary and secondary windings around a core. When high-voltage electricity flows through the primary winding, it creates a magnetic field that induces a lower voltage in the secondary winding, which is then distributed to consumers. This process is the same for both single-phase pad-mounted transformers and three-phase pad-mounted transformers, though the latter handles higher power demands typically associated with industrial or large commercial applications.
Application of Pad Mounted Transformer
Residential areas
Pad mounted transformers supply electricity to homes in neighborhoods. Installers typically position them near sidewalks or green spaces, blending them with the environment.
These transformers feature designs that minimize noise and can even mimic local landscaping to avoid being an eyesore or hazard. They provide reliable power for household appliances, heating, and lighting.
Commercial complexes
These transformers deliver consistent power to shops, offices, and exterior lighting in commercial areas like shopping centers. The focus is on ensuring uninterrupted power for business operations, security systems, and customer convenience.
Workers often place them discreetly in landscaped areas or behind buildings for aesthetic appeal while maintaining easy maintenance access.
Industrial settings
Here, pad mounted transformers power heavy machinery and lighting, which are tailored for high electrical loads. Their design prioritizes durability to withstand industrial conditions and potential chemical exposure. Strategic placement optimizes efficiency and safety near utility entry points or central operational zones.
Public infrastructure
These transformers, installed in accessible yet secure spots, are key to powering street lights, traffic signals, and public transit systems. The focus is on public safety and minimizing service interruptions, with features like tamper-proof locks and fault protection systems to quickly address issues without wider grid impact.
High voltage compartment
This section houses critical elements such as bushings, tap changers, fuses, and load break switches, essential for ensuring uninterrupted power transmission and distribution. It serves as the nerve center of the transformer's high-voltage operations, enabling efficient power management.
Low voltage compartment
Equipped with an array of gauges, terminals, and essential indicators, the low-voltage compartment plays a pivotal role in monitoring and facilitating connectivity. This compartment optimizes operational efficiency by providing real-time insights and facilitating seamless integration into the electrical system.
Oil tank
The oil tank serves as the central reservoir for indispensable transformer components, including the iron core, coils, and insulating oil. These components play a crucial role in regulating voltage levels and facilitating electromagnetic induction, which forms the cornerstone of the transformer's functionality. The robust construction of the oil tank ensures the safeguarding and longevity of these critical elements, thereby enhancing the transformer's overall performance and reliability.
Tap changer
The tap changer in a pad mounted transformer enables adjustments to the transformer's output voltage to accommodate varying load conditions. Typically featuring a panel-mounted cage switch design, tap changers offer multiple positions, allowing for precise voltage regulation. Daelim Transformer can customize tap changers with different speed and position options to meet specific operational requirements.
Low voltage (LV) terminals
Spade-type LV terminals serve as the interface between the transformer and external low voltage circuits. Crafted from corrosion-resistant materials, these terminals ensure reliable and durable connections, compatible with both copper and aluminum conductors. With their robust construction and secure fastening mechanisms, LV terminals guarantee stable electrical conductivity, essential for efficient power distribution.
Gauges
Various gauges and instruments are integrated into pad-mounted transformers to monitor critical operating parameters and ensure optimal performance. These gauges include vacuum pressure gauges, oil level gauges, pressure relief devices, and temperature indicators. Equipped with alarm functions, these gauges provide real-time monitoring and early warning of potential issues, enabling proactive maintenance and minimizing the risk of equipment failure.
High voltage (HV) bushings
HV bushings play a pivotal role in facilitating the transfer of high voltage electricity from the transformer to external circuits. Available in dead front and live front variants, these bushings are meticulously designed to ensure insulation and safety. Dead front bushings, fully insulated, are typically used in dead front pad mounted transformers, providing comprehensive protection against electrical hazards. On the other hand, live front bushings, partially exposed, are commonly employed in live front pad mounted transformers, offering a balance between safety and accessibility.
Load break switches
Load break switches offer manual control over grid connections, allowing operators to safely and efficiently connect or disconnect the transformer from external circuits. Available in two-position and four-position variants, these switches provide flexibility in operational configurations, enabling seamless integration with distribution networks. Whether isolating the transformer for maintenance or reconfiguring the electrical layout, load break switches enhance operational efficiency and safety, minimizing downtime and optimizing system performance.
Nameplate
Each pad-mounted transformer features a stainless steel nameplate located within the low voltage compartment. This nameplate contains essential information about the transformer, including its model number, serial number, rated capacity, voltage ratings, and manufacturing date. Serving as a comprehensive reference for maintenance and identification purposes, the nameplate ensures clear documentation of the transformer's specifications and history.
Fluid
Pad-mounted transformers utilize insulating fluid, either mineral oil or vegetable oil, to dissipate heat generated during operation and enhance insulation performance. This fluid surrounds the core and coils, providing efficient heat transfer and improving the transformer's overall lifespan. With options for both mineral and vegetable oil, Daelim Transformer offers transformers tailored to meet diverse environmental and operational needs.
Core & coils
At the heart of every pad mounted transformer lies the core and coils assembly, constituting the fundamental components responsible for voltage transformation. The iron core, meticulously constructed to minimize energy losses, provides a magnetic pathway for the flux generated by the coils. Wrapped around the core, the coils—fabricated from high-conductivity materials such as aluminum or copper—facilitate the induction process, converting electrical energy from one voltage level to another. By altering the turns ratio between the primary and secondary coils, pad mounted transformers enable precise control over output voltages, catering to diverse operational requirements.
Fuses
Integral to the protection of pad mounted transformers and associated equipment, fuses serve as critical safety devices, safeguarding against overcurrent and overheating conditions. Typically employing a double fuse protection system, pad mounted transformers utilize bayonet fuses, ISO links, and current-limiting fuse technologies to ensure reliable and robust protection mechanisms. In the event of excessive current flow or elevated temperatures, the fuse elements melt, interrupting the circuit and preventing damage to the transformer components. This proactive approach to electrical safety enhances system reliability and longevity, mitigating the risk of equipment failure and operational disruptions.
How to Maintain Pad Mounted Transformer
Inspection: Conduct regular visual inspections of the transformer and its surroundings, looking for signs of damage or wear. Check for signs of oil leaks or damage to the transformer’s exterior and ensure that the transformer is free of debris.
Oil level check: Check the oil level in the transformer and top it up if necessary. Make sure to use the correct type of oil for the transformer.
Cleaning: Keep the transformer clean and free of dirt and debris. Use a soft cloth and mild detergent to clean the exterior of the transformer.
Electrical testing: Conduct regular electrical tests on the transformer to ensure that it is functioning correctly. These tests should include insulation resistance, turns ratio, winding resistance, and dielectric strength tests, as well as load and no-load loss tests.
Replacement of worn or damaged parts: If any parts of the transformer are found to be worn or damaged during inspections or testing, they should be replaced promptly to prevent further damage.
Infrared testing: Using an infrared camera to detect hot spots on the surface of transformers while they are under load. Hot spots can indicate potential issues like loose connections, damaged windings, or insulation degradation.
How to Establish a Pad Mounted Transformer Installation
Secure a strong foundation
In areas where the ground freezes, a pad-mounted distribution transformer's base must have deep enough footings to prevent settlement and heave. Also, ensure the concrete pad is entirely flat so that air doesn't get trapped between the compartment and the base. The transformer's base includes mounting brackets that allow the pad to be securely fastened to the base. Carefully lower the transformer to the pad while maintaining the unit level to avoid breaking the cabinet.
Inspect the seal
Check the fluid-level indicator to see how much fluid is in the tank. Starting with the pressure-relief valve open, remove the pipe plug from the low-voltage area cautiously. After each use, it is advisable that you reseal it.
Ensure external electrical connections
A connection from the system ground to the tank ground is necessary. If you don't follow these rules, you could hurt yourself or wreck some expensive machinery. Never exceed the voltage ratings listed on the transformer's label. You should connect the neutrals on the transformer to the neutrals on the system. Next is to disconnect all cables and plugs from each other when they are not in use.
Close the cabinet
Before leaving the unit, ensure you lock the cabinet using the padlock and other means provided. The padlock's shackle should go in and out of its hole without much resistance.
Certifications
Our Factory
Yawei Group has more than 180 engineering and technical person , more than 1200 employees, covering an area of 240,000 square meters.
We have strong production capacity and built a highly efficient marketing team. The products include 110kvpage-3-5220kv and 500kv ultra-high voltage transformers, 35kv and below dry-type transformers, oil immersed transformers, amorphous metal transformer, wind and solar storage new energy transformers, prefabricated substation and special transformers such as reactors, electric furnace transformers, rectifier transformers,mining transformers, split transformers and phase shifting transformers of various specifications. In order to assure the implementation of the advanced design and manufactural technology,some key equipments, moulds and tools had been replaced and improved with the latest technologies to meet the requirements of product quality.
FAQ
Jiangsu Yawei Transformer Co.,Ltd. is one of the most professional pad mounted transformer manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy high-grade pad mounted transformer made in China here from our factory.
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